ASTROSAT CZTI

Data Quality Report

Orbit 17744

Creation date: 2024-06-27T17:40:21.517713
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T03_070T04_9000002638_17744cztM0_level2.evt modeM0/AS1T03_070T04_9000002638_17744cztM0_level2_quad_clean.evt
Size (bytes)738,555,840124,061,760
Size704.3 MB 118.3 MB
Events in quadrant A6,185,621783,016
Events in quadrant B4,839,888807,346
Events in quadrant C4,869,387764,576
Events in quadrant D5,824,738739,022

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247201
B0205711
C0203101
D0240131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A95744674.877794%
B9574620.647587%
C9573790.825238%
D95731181.232633%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 12119 9576 425 425 3.51% 4.44%
B 12119 9576 15 15 0.12% 0.16%
C 12118 9575 1 1 0.01% 0.01%
D 12118 9575 79 79 0.65% 0.83%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 1700563 7357.65 1153 1128 231.0
A 15 191 40672 171.2 1153 1128 231.0
A 0 226 10166 39.13 1153 1128 231.0
B 0 219 76642 344.3 1180 1153 219.3
B 10 245 62735 280.87 1180 1153 219.3
B 0 230 31659 139.13 1180 1153 219.3
C 14 238 177941 668.83 1136 1146 264.3
C 3 233 118167 442.7 1136 1146 264.3
C 5 218 90652 338.61 1136 1146 264.3
D 1 52 1109602 3750.63 1123 1102 295.6
D 7 238 155615 522.8 1123 1102 295.6
D 13 168 111659 374.07 1123 1102 295.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter